e63b7ee385
#1 性能优化 1、句柄中存储文件句柄，无需每次打开 2、完善demo中的性能测试场景 单机测试硬件（OS:CentOS Linux release 7.4.1708, CPU:Intel E5 2640 v4 2.4GHz, Disk:ST600MM0208 600G） 30线程每线程循环写入10w条日志，耗时380448us，平均日志写入速度788544条/s，日志平均长度104Byte/条，折合写入磁盘速度为78.8MB/s
/* *NAME:MESA_handle_logger *INTRODUCTION:Based on logger and thread_safe, provide runtime_log function with independent handle for different users. *Author:yangwei@iie.ac.cn *History: 2014-03-24 created by yw 1)first version 2014-04-16 modified by yw 1)strict inspection parameters, compatible with g++ 4.4.4 2014-05-29 update by yw 1)create directory is supported ------------------------------------------------------------------------------------- NOTICE: 1)compatible with g++, extern with c; 2)thread_safe IS supported; 3)DO destroy handle process before exit. 4)demo requires lpthread support */